Production-intent ESP32-C6 controller for WS2812B/WS2815 addressable LED strips with 5V/10A input protection, strip high-side switching, 5V data level shifting, user buttons, and antenna keepout requirements.
Breadboard-only schematic for an ESP32-based LC electromagnetic response visualizer using a handmade coil oscillator, LM339 comparator, GPIO27 frequency input, SSD1306 I2C OLED, and calibration button. No PCB layout is included.
This board was developed for applications and installations where space is premium and projects are made as permanent set ups. Small, available in 3.3 V and 5 V versions, powered by ATmega328P.